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Submission #1026465

# Submission time Handle Problem Language Result Execution time Memory
1026465 2024-07-18T06:26:47 Z Mardonbekhazratov Catfish Farm (IOI22_fish) C++17
9 / 100
 54 ms 10988 KB 
#include "fish.h"

#include <iostream>
#include <vector>
#include <tuple>
#include <set>
#include <algorithm>
#include <map>

using namespace std;

#define ff first
#define ss second
#define ll long long

template<typename T,typename S>
T max(T a,S b){return a>b?a:b;}

int n,m;
vector<int>x,y,w;
ll ans=0;

ll sub2(){
    ll cur=0;
        if(n==2){
            for(int i=0;i<m;i++){
                if(x[i]) cur+=w[i];
                else ans+=w[i];
            }
            return max(ans,cur);
        }
        vector<pair<int,int>>a,b;
        for(int i=0;i<m;i++){
            if(x[i]&1) cur+=w[i],a.push_back({y[i],w[i]});
            else b.push_back({y[i],w[i]});
        }
        sort(a.begin(),a.end());
        sort(b.begin(),b.end());
        ans=cur;
        int j=0;
        for(auto [g,f]:b){
            cur+=f;
            while(j<a.size() && a[j].ff<=g) cur-=a[j].ss,j++;
            ans=max(ans,cur);
        }
        return ans;
}

ll sub3(){
    vector<pair<int,int>>a;
    for(int i=0;i<m;i++) a.push_back({x[i],w[i]});
    a.push_back({n,0});
    sort(a.begin(),a.end());
    int last=-1;
    vector<int>b={0};
    for(int i=0;i<=m;i++){
        if(a[i].ff-last==1) b.push_back(a[i].ss);
        else{
            ll cur=0;
            vector<ll>pref(b.size()+1),suff(b.size()+2);
            pref[0]=0;
            suff[b.size()+1]=0;
            for(int i=1;i<=b.size();i++){
                pref[i]=pref[i-1];
                if(i>2){
                    pref[i]=max({pref[i],pref[i-3]+b[i-1]+b[i-3],pref[i-2]+b[i-1]});
                }
                else{
                    pref[i]=max(pref[i],b[i-1]);
                }
            }
            for(int i=b.size();i>0;i--){
                suff[i]=suff[i+1];
                if(b.size()-i>1){
                    suff[i]=max({suff[i],suff[i+3]+b[i-1]+b[i+1],suff[i+2]+b[i-1]});
                }
                else{
                    suff[i]=max(suff[i],b[i-1]);
                }
            }
            for(int i=0;i<=b.size();i++) cur=max(cur,pref[i]+suff[i+1]);
            ans+=cur;
            vector<int>ne;
            swap(ne,b);
            b.push_back(a[i].ss);
        }
        last=a[i].ff;
    }
    
            ll cur=0;
            vector<ll>pref(b.size()+1),suff(b.size()+2);
            pref[0]=0;
            suff[b.size()+1]=0;
            for(int i=1;i<=b.size();i++){
                pref[i]=pref[i-1];
                if(i>2){
                    pref[i]=max({pref[i],pref[i-3]+b[i-1]+b[i-3],pref[i-2]+b[i-1]});
                }
                else{
                    pref[i]=max(pref[i],b[i-1]);
                }
            }
            for(int i=b.size();i>0;i--){
                suff[i]=suff[i+1];
                if(b.size()-i>1){
                    suff[i]=max({suff[i],suff[i+3]+b[i-1]+b[i+1],suff[i+2]+b[i-1]});
                }
                else{
                    suff[i]=max(suff[i],b[i-1]);
                }
            }
            for(int i=0;i<=b.size();i++) cur=max(cur,pref[i]+suff[i+1]);
            ans+=cur;
    return ans;
}

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y, std::vector<int> W) {
    tie(n,m,x,y,w)=tie(N,M,X,Y,W);
    bool su1=true,su2=true,su3=true;
    for(int i=0;i<m;i++){
        if(x[i]%2==1) su1=false;
        if(x[i]>1) su2=false;
        if(y[i]!=0) su3=false;
    }
    if(su1){for(int i=0;i<m;i++) ans+=w[i];return ans;}
    if(su2) return sub2();
    if(su3) return sub3();
    return ans;
}

Compilation message

fish.cpp: In function 'long long int sub2()':
fish.cpp:43:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |             while(j<a.size() && a[j].ff<=g) cur-=a[j].ss,j++;
      |                   ~^~~~~~~~~
fish.cpp: In function 'long long int sub3()':
fish.cpp:63:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |             for(int i=1;i<=b.size();i++){
      |                         ~^~~~~~~~~~
fish.cpp:81:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             for(int i=0;i<=b.size();i++) cur=max(cur,pref[i]+suff[i+1]);
      |                         ~^~~~~~~~~~
fish.cpp:94:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   94 |             for(int i=1;i<=b.size();i++){
      |                         ~^~~~~~~~~~
fish.cpp:112:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |             for(int i=0;i<=b.size();i++) cur=max(cur,pref[i]+suff[i+1]);
      |                         ~^~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 3164 KB Output is correct
2 Correct 16 ms 3932 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 52 ms 10988 KB Output is correct
6 Correct 54 ms 10836 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 39 ms 7632 KB Output is correct
3 Correct 53 ms 9156 KB Output is correct
4 Correct 13 ms 3160 KB Output is correct
5 Correct 17 ms 3932 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 20 ms 4356 KB Output is correct
13 Correct 24 ms 5076 KB Output is correct
14 Correct 20 ms 4208 KB Output is correct
15 Correct 22 ms 4456 KB Output is correct
16 Correct 20 ms 4308 KB Output is correct
17 Correct 22 ms 4564 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 13 ms 2996 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21138116782516'
4 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 13 ms 2996 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21138116782516'
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 3164 KB Output is correct
2 Correct 16 ms 3932 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 52 ms 10988 KB Output is correct
6 Correct 54 ms 10836 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 39 ms 7632 KB Output is correct
9 Correct 53 ms 9156 KB Output is correct
10 Correct 13 ms 3160 KB Output is correct
11 Correct 17 ms 3932 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 20 ms 4356 KB Output is correct
19 Correct 24 ms 5076 KB Output is correct
20 Correct 20 ms 4208 KB Output is correct
21 Correct 22 ms 4456 KB Output is correct
22 Correct 20 ms 4308 KB Output is correct
23 Correct 22 ms 4564 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Incorrect 13 ms 2996 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '21138116782516'
27 Halted 0 ms 0 KB -